This SE-3945 is a 100 watt triode with a mu of 5.3. SE = Steam Engineering. It is an 845 made by Westinghouse for the U.S. Navy and was used in early SONAR equipment. They were made with brass and aluminum bases. Later Navy tubes were designated 38145.
Length = 7.87" Diameter = 2.31"
Max voltage = 1250
Max current = 120 ma
Fil voltage = 10
Fil current = 3.25 amps GOTO INDEX